Cutting out cylinders fob bobbins



UNITED STATES PATENT OFFICE.

LEWIS BROWN, OF EPSOM,

NEV HAMPSHIRE.

CUTTING OUT CYLINDERS FOR BOBBINS, &c.

Specification of Letters Patent No. 6,391, dated April 24, 1849.

To all whom it may concern `Be it known that I, LEWIS BROWN, of Epsom,in the county of Merrimack and State of New Hampshire, have invented anew and useful machine for the purpose of manufacturing cylinders fromthe end of a stick or log of timber, which cylinders may be afterwardconverted into bobbins, spools, or various other contrivances; and I dohereby declare that the said invention is fully described andrepresented in the following specification and accompanying drawings,letters, figures, and references thereof.

0f said drawings Figure l exhibits a top view of my said machine; Fig.2, a front elevation of it; Fig. 3, a transverse and vertical section ofit taken in the middle of the frame and so as to represent an end viewof the cutters, etc. Fig. 4, is a side View of one of the cuttercylinders on an enlarged scale. Fig. 5, is a front end view of it, andFig. 6, is a central and longitudinal section of it.

A A A, &c., are a series of sixteen hollow cutting cylinders or tubes,arranged with respect to one another as seen in the drawings, each ofsaid cylinders being supported by a horizontal shaft B, on one end ofwhich it is fixed and from which it projects. In the middle of each ofsaid hollow cylinders a center bit C is arranged and so as to projectfrom the cylinder, as seen in Figs. 5 and 6. Said cylinders are disposedin two circular rows, there being five of them in the inner and elevenof them in the outer of said rows. Their shafts B are respectivelysupported so as to be capable of being revolved in suitable bearingsmade in two cross plates or heads E F extending between and connected tothe side rails of a horizontal sliding frame Gr, which is arranged andsupported on the main frame H in such manner as to be capable of beingmoved forward or backward in a longitudinal direction by the hand of theattendant applied to a lever I.

Each of the shafts B has a small gear or toothed pinion K fixed on itsrear end, the said gear being made to engage with one of two toothedwheels L or L fixed on a center shaft M (see Fig. 7) which denotes acentral, vertical and longitudinal section of the shaft M and cuttercylinders, &c., applied to it. N is a drum pulley placed on the shaft Mfor the purpose of rotating it by a band proceeding from some suitabledriving power. IVhen said shaftI revolves it puts each of the cuttercylinders in'revolution. O O O, &c., are a series of rollers arrangedwith respect to one another and applied to a frame P, as seen in Figs. land 2. Each end of said frame is sustained on the top of a vertical rackbar Q, as seen in Fig. 3. A horizontal shaft R, suitably supported inbearings applied to the main frame has a geared pinion aflixed on eachend, one of said geared pinions being represented by red lines in Fig.3. Each of said pinions engages with one of the racks, so that when theshaft is rotated the frame of rollers may be made to rise or fall,according to the direction in which said sha-ft is moved. The shaft isrevolved by the hand applied to a crank R upon a shaft S, said shafthaving a worm gear T on it which works in a toothed wheel fixed on theshaft R.

Each cutter vcylinder A is providedwith a cylindrical and projectingiianch a, which is suitably cut out and formed to receive and sustainthree or any other suitable number of cutters Z) Z), which projectbeyond it or the face of it` Each of the said cutters has an opening cmade in front of it and through the flanch a. It also has a helical ribZ extending from it and projecting the same height above the surface ofthe cylinder A as the flanch does. At the opposite end of the cylinder ahole or passage e is cut or made through the cylinder just in rear ofeach rib, as seen in the drawings. The ribs, flanches, discharge holesand cutters are not represented in Figs. l, 2 and 3, but each cylinderA, therein denoted, must be supposed to be provided with them. Theobject of the holes c e c is to allow the borings or chips which aremade by the center bit of each cylinder, to escape from the interior ofthe cylinder and pass into either of the spaces f f between the ribs,the said spaces f j 7 being to allow the shavings niade by the cuttersto escape as fast as made and thereby prevent them from clogging theaction of the tool.

When cylinders are to be taken from a log of wood it is laid on therollers O O, &c., and the frame P raised so as to bring the log up tothe right elevation for the series of boring cylinders to operate on thelog. The end of the log is presented against the cutting ends of thecylinders A A, 85o., and the latter are put in revolution and forced upagainst the log. They will each bore into the log in such inanner as toforni a cylindrie piece of`wood Which Will be Within its cylinder, andWill be bored through its center or axis by the center bit of saidcylinder. On withdrawing the series of boring cylinders Jfrom the logand applying a savv. to it so as to separate it transversely, and at adistance from its end corresponding to the depth of the bore into it theseveral cylinders of Wood may be removed from the log.

iny signature this 12th day of July, A. D. 1848.

LEWIS BROWN. Vitnesses:

GEO. W. GILMAN, SAML. D. BELL.

